When I had my two ringer, I used my Black Rapid sling and I carried that heavy zoom on my D7000 on a hot summer afternoon in an impromptu model shoot. I happened across what I initially thought was a couple taking pictures of the local area. Turns out she was modeling for the guy, so I jumped in and started shooting. We went to several locations and I had no issues carrying my rig on my hip. I had a lot of fun and felt like a pro!